King Wuling was a ruler of the ancient Chinese state of Zhao during the Warring States period. He is best known for his military reforms and efforts to strengthen his kingdom. Under his leadership, Zhao expanded its territory and improved its military capabilities, making it a significant power in the region. One of King Wuling's notable achievements was the introduction of the Xiongnu cavalry tactics, which transformed the Zhao army. He encouraged his soldiers to adopt the nomadic lifestyle of the Xiongnu, allowing them to become more mobile and effective in battle. His reign marked a period of innovation and growth for the state of Zhao.